Ch 03: Branching, Loops and Program Flow

Examines program control flow in assembly, flag register evaluation (ZF, CF, SF, OF), relative displacement jumps, implementing loops, and bubble sort sorting algorithms in assembly.

261 Questions261 MCQs0 Short Questions0 Long Questions

🎯 Exam Practice Papers

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.

Showing 191 – 200 of 261 Questions

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Q191

❓ MCQ📘 CS401📑 Lec 3🏷️ ADC Instruction Syntax and OperandsEasy🔁⭐💡📄🎓VU🏛️VU

How many explicit operands are accepted by the ADC (Add with Carry) assembly instruction?

💻 assembly Snippet

adc ax, bx

A.0 operands
B.1 operand
C.2 operands
D.3 operands

Q192

❓ MCQ📘 CS401📑 Lec 3🏷️ DIV Instruction Implied Dividend RegistersEasy🔁⭐💡📄🎓VU🏛️VU

When the divisor operand of a DIV instruction is 16 bits wide, what is the bit-width of the implied dividend?

💻 assembly Snippet

div bx

A.64 bits
B.32 bits
C.16 bits
D.8 bits

Q193

❓ MCQ📘 CS401📑 Lec 3🏷️ Far Jump Mechanics and Absolute AddressingMedium🔁⭐💡📄🎓VU🏛️VU

Unlike short and near relative jumps, a 'Far' jump instruction specifies a complete segment and offset target, making it which type of jump?

💻 assembly Snippet

jmp 0x1000:0x0200

A.Memory dependent
B.Absolute
C.Temporary
D.Indirect

Q194

❓ MCQ📘 CS401📑 Lec 3🏷️ DIV Instruction Operand FormsEasy🔁⭐💡📄🎓VU🏛️VU

How many distinct operational forms (operand sizes) does the DIV (Unsigned Division) instruction possess in 8088 assembly language?

💻 assembly Snippet

div bl
div bx

A.Two forms (8-bit divisor and 16-bit divisor)
B.Three forms
C.Four forms
D.Five forms

Q195

❓ MCQ📘 CS401📑 Lec 3🏷️ Divide Overflow Error and INT 0 ExceptionEasy🔁⭐💡📄🎓VU🏛️VU

When a dividend is divided by a small divisor such that the calculated quotient exceeds the storage capacity of the destination register, what type of error occurs?

💻 assembly Snippet

mov ax, 1000
mov bl, 1
div bl

A.Divide logical error
B.Divide overflow error
C.Divide syntax error
D.An illegal instruction

Q196

❓ MCQ📘 CS401📑 Lec 3🏷️ ADC Instruction Operands and SyntaxEasy🔁⭐💡📄🎓VU🏛️VU

How many explicit operands are accepted by the ADC (Add with Carry) instruction?

💻 assembly Snippet

adc ax, bx

A.Two operands
B.Three operands
C.Five operands
D.Zero operands

Q197

❓ MCQ📘 CS401📑 Lec 3🏷️ Carry Flag (CF) and Multi-Word AdditionEasy🔁⭐💡📄🎓VU🏛️VU

When two 16-bit unsigned numbers are added, the result can be up to 17 bits long. In which flag bit is this 17th overflow/carry bit stored for testing and multi-word arithmetic?

💻 assembly Snippet

add ax, bx
adc dx, cx

A.Carry Flag (CF)
B.Parity Flag (PF)
C.Auxiliary Carry Flag (AF)
D.Zero Flag (ZF)

Q198

❓ MCQ📘 CS401📑 Lec 3🏷️ ADD Instruction Operation MechanicsEasy🔁⭐💡📄🎓VU🏛️VU

What is the exact execution result of the assembly operation code 'ADD AX, BX'?

💻 assembly Snippet

add ax, bx

A.Adds the value of BX to AX and modifies register BX
B.Adds the value of AX to BX and modifies register AX
C.Adds the value of BX to AX and stores the result in AX (modifying AX)
D.Adds the value of BX to AX and modifies nothing

Q199

❓ MCQ📘 CS401📑 Lec 3🏷️ ADD Instruction Mechanics and DocumentationEasy🔁⭐💡📄🎓VU🏛️VU

Consider the assembly instruction 'ADD AX, BX' in a program that adds two numbers. What is the most accurate inline comment describing this instruction?

💻 assembly Snippet

add ax, bx

A.; No comment needed
B.; accumulate sum in add
C.; accumulate sum in AX
D.; accumulate sum in BX

Q200

❓ MCQ📘 CS401📑 Lec 3🏷️ Instruction Mnemonics and Opcode Equivalence (JNE / JNZ)Easy🔁⭐💡📄🎓VU🏛️VU

What is the distinction between the assembly jump instructions JNE (Jump if Not Equal) and JNZ (Jump if Not Zero)?

💻 assembly Snippet

cmp ax, bx
jne target

sub cx, 1
jnz target

A.They are functionally identical and assemble to the same opcode; the difference is only for programmer readability
B.They generate completely different machine code opcodes in the assembler
C.JNE is handled by the debugger while JNZ is handled by the processor
D.JNE works on signed numbers while JNZ works on floating-point numbers

Ch 03: Branching, Loops and Program Flow

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

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